Vespa gts 300 exhaust progect-1

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Vespa gts 300 exhaust progect How to make the exhaust on the bike noisier? First step: cut the muffler in half. The incision must be on the inside You can see what&inside the muffler. This is the gas distribution system and cat. Here you can see the path of the gases. Cut the catalyst and the lower tube. Exhaust welding. Cleaning the rust from the muffler. After removing the rust, I smear the muffler with Vurt rust converter. After the rust converter dries, the metal turns purple-blue. Then I sand with 320 sandpaper before painting the muffler. I paint the muffler with high-temperature paint (Dupli color 800C) I dismantle the old muffler and install the modified muffler. Noise at low revs is slightly higher than before, but at high revs it increases. #exhaust

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